Suction cup clamp



FIG. 1 is perspective view of a suction cup clamp showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is bottom plan view thereof wherein the portions of the article shown in broken lines form no part of the claimed design. 

The ornamental design for a suction cup clamp, as shown and described. 